Molder&#39;s flask



Jan, 6. A1925.

G. D. BISHOP ET AL MOLDER S FLASK Filed April 29. 1924 2 Sheets-Sheet 2 @f f a".-

Patented Jan. 6, 1925.

UNITEDl` STATES PATENT OFFICE.

GEORGE D. BISHOP AND CLARENCE P. HAETMAN, OE CARLISLE, PENNSYLVANIA.

MULDER S VFIJJILSZK.

Application filed April 29, 1924. Serial No. 709,821.

To all lwhom t may concern.' Be it known that we, GEORGE D. BISHOP and CLARENCE P. HARTMAN, citizens of the United States, residing at Carlisle, in the county of Cumberland and State of Pennsylvania, have invented certain new and useful Improvements in a Molders Flask, of which the following is a specification.

Y YThis invention relates to new and useful 1o improvements in molders flasks of the snap flask type and has for its principal Object to provide'a means wherebythe ysections comprising the flask may be adjusted with respect to each other to suit differenty sizes of l5 patterns, thereby obviating the necessity'of having to employ a separate flask Ifor each different size. Y

One of the important objects of the present invention is to provide a molders flask 2o of the above mentioned character, wherein a connection between the drag and the cope provides an intermediate section when in an extended position for increasing the depth of the Hask to receive a similar size pattern.

A still further object of the present invention is to'provide a molders flask of the above mentioned character, wherein means is associated with thev same for holding the drag and cope and the collapsible extension hingedly connected therebetween may be held in an extended position against accidental collapsing when in use.

A further object of the present invention Y is vto provide a molders flask of thelabove mentioned character, which is simple 1n con` struction inexpensive, strong and durable and furthermore adapted for the purposes for which it is designated.

Other objects and advantages of this in- `vention will become apparent duringv the course of the following description.

In the accompanying drawings forming apart of this specification and in which like numerals designate like parts throughout the same: Q

Figure l is a side elevation of `our 1mpr'oved molders iask showing'the same 1n an extendedv position.

Figure 2 is a top plan view thereof.

Figure 3 is a sectional view taken approximately on line 3 3 of Figure 2.

Figure 4 is a fragmentary sectional view of the hinged jaws between the plates comprising the intermediate section. Y

j Figure 5 vis a fragmentary detail perspeclower section while thecope may be termed the upper section. Each of the sections comprises two L-shaped members which are hinged together at one corner as shown at 3, the opposite corner provided with clamping means shown at 4. This construction is well known in the art and a further detaileddescription of the same is not thought necessary. This type of construction'also forms what is known in the art as a snap flask. Vhen the L-shaped members are in locked engagement with each othera substantially rectangular shaped frame is provided by each of the sections in the manner clearly shown in Figure 2 of the drawings. l

VFor the purpose of increasing the depth of the flask so as to Obviate the necessity of having to employ two separate flasks of different sizeswe provide the collapsible intermediate section designated generally by the numeral 5. The intermediate section consists of hinged plates 6 andv 7 respectively which are of a predetermined width and the same are hinged as shownY at 8. For the purpose of limiting the swinging movement of the plates in one direction we providethestop members shown at 9 and the construction of which is more clearly illustrated in Figure 4 of the drawings. These plates comprising the intermediate section are arranged on each of the sides of the upper and lower sections and is further disposed between the same in such a manner as to space the cope 2 from the drag l when the intermediate section is in an extended position in the manner clearly shown in Figures l and 3 of the drawings.

The upper plate 5 is hinged at its upper Y end as shown at 10 to the plate ll which extends around the bottom of the upper rectangular frame while the lower plate 7 is hinged at V12 to a similar plate 13 which extends around the top ofthe lower rectangular frame l. This constructionis also more clearly illustrated in Figure 3 of the drawings.

This constructionenables the plates 5 and @comprising the intermediate section and which extend around the sides between the cope andrdrag tor be folded so vthat the cope may lie substantially flush with the upper face of the drag whereby a iiask of a smaller depth is formed.

When it is desired to increase the depth of theflask, ythe plates 5 and y6. which comprise the intermediate section are extended into the position as shown in Figure 3 wherebyl the cope is spaced from the drag and the depth 'of the flask is increased vaccording to thepredetermined size ofthe pattern. For thepurpose of preventing the accidental collapsingof the intermediate section when the same is in an extended position, we provide amanually 'actuated vlocking means, the con struction of which will be presently described. y

The locking means comprises a plurality of"verticallrods such as are shown at 14 and anyv number of these rods may be arranged on each sideof the flask in the manner as shown more. clearly in Figures 1 and 2 of the drawings. rihe vertical rodsk are adapted'to be supported at their lower ends in suitable brackets as shown at 15 which'A are securedto the sides of the drag or lowerv sectionl at spaced'intervals andthe upper ends of the rods extend through aligning brackets such as are shown at 16 and which are supported on the sides of the cope or upper section 2 in the. manner shown in the drawings. The intermediate portions of the arm ofthe rod are provided with the lateral fingers or projections shown at 17 and the purpose thereof'will be presently more i fully' described. The upper ends of the vertical-rods are provided with crank portions 18 and the free ends of the crank portions areconnected to-gether by means of an elongated lever or actuating member 19.

As more clearly shown in the drawings, with reference more particularly to Figure 2, each side of the flask is provided with substantially a plurality of vertical rods and projecting ingers and which are'adapted to be actuatedY by means of the elongated lever 19 and the cranks 18. 1t is of course to be understood that the rods and the lingers carried' thereby on each of the sides of the flask' are operated independently of the other side.

Uien the plate sections comprising the intermediate or collapsible section 5 is in an extended position, the levers 19 are actuated so as to' cause the vertical rods 14 to have the fingersA 17'carried thereby to extend inwardlyV between the upper and lower sections and to further have the ends of the fingers in engagement with the hinged connection 8 of the plates 6 and 7 whereby the isipae latter are prevented from accidentally collapsing when the flask is in an extended position".

When it is desired to use a flask of a smaller depth so as to cause the cope 2 to lie substantially ilushwi'th the upper Ysurface of the drag 1, the levers 19 are actuated in the reverse direction so as to cause the rods 14 and the fingers carried thereby to be brought out ofengagement with the intermediate section and tofurther` be disposed outwardlyy from betweenfthe cope. and drag whereby thek intermediate section, may be collapsed andthe. cope .adapted to. fit over a collapsed intermediate section andfrestingon the upperl surface of ther drag; 1, in the manner as is obvious from the construction shown in the drawings.

1t will thus be seen. from kthe foregoing description, that a molders flask has been provided which may be readily and easily extendedto anotherv size faccordingito the depth necessary. to suitthe pattern and a manually actuated locking' means willlhold the flask in its extendedY position against accidental .collapsing when in. use. n

The simplicity in which our. deviceV is constructed enables thesame yto be.. manufactured at a very low costy andthe parts will be further ystrongand durable.Y

While we have shown the preferred em@ bodiment of ourv invention, it is: tobe understood that various changes in the size, shape and arrangement of parts may beresorted to without departingfrom the spirit of the invention andthe .scope of the appended claims. l i

Having thus described our invention, what we claim is :y

1. A moldersfflalsk comprising upper and lower sectionsfan intermediate collapsible section hingedly connected thereto, and means for holding. the intermediate section in an4 extended `positionwhereby the upper section isspacedrfrom the lower section.

2. A molders flask comprising a. drag, a cope, and a collapsible. section interposed between tlie drag and cope andhingedly connected respectively thereto.

3. A molders liask comprising a drag, la cope, a collapsible section linterposed between the drag and cope andY hingedly connected respectively thereto, and means for holding the collapsible section in an extendedl position'.

4. A molders flask comprising a drag, a cope, a collapsible section interposed" be tween the drag and cope andfliingedly connected thereto, said collapsible ksection comprising hinged plates. i i

5. A molders flask comprising a drag, a cope, a collapsible section interposed between the drag'andcope and hingedly connected thereto, said'collapsible section comprising hingedy plates, and vme'ans'for enllO gagement with the hinged plates for holding the same in an extended position Whereby the cope is spaced from the drag.

6. A molders flask comprising a drag, a cope, a collapsible section interposed between the drag and cope and hingedly con nected thereto, said collapsible section comprising hinged plates, and means for engagement with the hinged plates for holding the same in an extended position Whereby the cope is spaced from the drag, said means comprising' vertical rods journaled on the sides of the cope and drag, supporting brackets therefor, projecting fingers carried by the intermediate portions of saidv rods adapted for engagement With the hinged plate, and means for moving the projecting fingers into an operative or` inoperative position.

7. A molders flask comprising a drag, a cope, a collapsible section interposed between the drag and cope and hingedly connected thereto, said collapsible section comprising hinged plates, and means for engagement with the hinged plates for holding the same. in an extended position Whereby the cope is spaced from the drag, said means comprising vertical rods j ournaled on the sides of the cop-e and drag, supporting brackets therefor, projecting fingers carried by the intermediate portions of said rods adapted for engagement with the hinged plate, means for moving the projecting fingers into an operative or inoperative position, said last mentioned means comprising cranks mounted on the upper ends of said rods, and an operating lever secured to the opposite ends of said cranks on each of the sides of the flask.

In testimony whereof We afiix our signatures.

GEORGE D. BISHOP. CLARENCE P. HARTMAN. 

